diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Frame-onPop-07.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Frame-onPop-07.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+// Trying to set an onPop handler on a dead frame throws an exception.
+var g = newGlobal();
+g.eval("function f() { }");
+g.eval("function g() { f(); }");
+g.eval("function h() { g(); }");
+g.eval("function i() { h(); }");
+var dbg = new Debugger(g);
+var log;
+
+var frames = [];
+dbg.onEnterFrame = function handleEnter(f) {
+    log += "(";
+    assertEq(f.live, true);
+    frames.push(f);
+};
+log = '';
+g.i();
+assertEq(log, "((((");
+assertEq(frames.length, 4);
+for (i = 0; i < frames.length; i++) {
+    assertEq(frames[i].live, false);
+    var set = false;
+    try {
+        frames[i].onPop = function unappreciated() { };
+        set = true; // don't assert in a 'try' block
+    } catch (x) {
+        assertEq(x instanceof Error, true);
+    }
+    assertEq(set, false);
+}